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The GCF of 16, 18 and 27 is 1.

The prime factorization of 16 is 2*2*2*2

The prime factorization of 18 is 2*3*3

The prime factorization of 27 is 3*3*3

The numbers have no common factors except 1, so that is their GCF.

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9y ago

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